Heavy Rain and Flash Flooding in the West; Heat Expands in the Central U.S.

Monsoonal moisture will produce showers and thunderstorms with heavy rain over parts of the Southwest, Great Basin, and Central Rockies through Monday. Flash flooding is possible, especially in and around burn scars and in areas of steep terrain. Heat will persist across the Central U.S. early this week, spreading into the Ohio Valley and Mid-Atlantic later this week. Read More >

Current conditions at

ST. IGNATIUS (SIGM)

Lat: 47.31333°NLon: 114.09806°WElev: 2990.0ft.

NA

49°F

9°C

Humidity 64%
Wind Speed SSE 4 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Wind Chill48°F (9°C)
Last update 31 Aug 01:00 AM MDT
Extended Forecast for

5 Miles SW St. Ignatius MT

  • Overnight

    Overnight: Patchy smoke before 3am. Mostly clear, with a low around 45. South southeast wind around 6 mph.

    Low: 45 °F

    Patchy Smoke

  • Monday

    Monday: Sunny, with a high near 80. South southeast wind around 6 mph becoming calm.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 51. North northeast wind around 6 mph becoming light and variable  in the evening.

    Low: 51 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 87. Calm wind becoming east around 6 mph in the afternoon.

    High: 87 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of rain, mainly before midnight.  Mostly cloudy, with a low around 54. West wind 6 to 13 mph becoming south southeast after midnight. Winds could gust as high as 21 mph.

    Low: 54 °F

    Chance Rain

  • Wednesday

    Wednesday: Rain likely, then showers and possibly a thunderstorm after noon.  High near 72. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 72 °F

    Showers

  • Wednesday Night

    Wednesday Night: A 40 percent chance of rain, mainly before midnight.  Mostly cloudy, with a low around 48.

    Low: 48 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain before noon, then a chance of showers and thunderstorms after noon.  Mostly cloudy, with a high near 69.

    High: 69 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Patchy smoke before 3am. Mostly clear, with a low around 45. South southeast wind around 6 mph.
Monday
Sunny, with a high near 80. South southeast wind around 6 mph becoming calm.
Monday Night
Mostly clear, with a low around 51. North northeast wind around 6 mph becoming light and variable in the evening.
Tuesday
Mostly sunny, with a high near 87. Calm wind becoming east around 6 mph in the afternoon.
Tuesday Night
A 40 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 54. West wind 6 to 13 mph becoming south southeast after midnight. Winds could gust as high as 21 mph.
Wednesday
Rain likely, then showers and possibly a thunderstorm after noon. High near 72. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
A 40 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 48.
Thursday
A chance of rain before noon, then a chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 69.
Thursday Night
Mostly cloudy, with a low around 45.
Friday
A slight chance of rain. Mostly sunny, with a high near 73.
Friday Night
A slight chance of rain. Partly cloudy, with a low around 48.
Saturday
A slight chance of rain. Mostly sunny, with a high near 77.
Saturday Night
A slight chance of rain. Partly cloudy, with a low around 51.
Sunday
A slight chance of rain. Mostly sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW St. Ignatius MT
 47.28°N 114.17°W (Elev. 3228 ft)
12:22 am MDT Aug 31, 2026
1am MDT Aug 31, 2026-6pm MDT Sep 6, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database